Coal gangue refers to rock waste generated during coal mine shaft construction, tunneling, coal mining and coal washing, and is the general term for solid waste discharged in coal mine construction and coal production activities.
Utilization in Building Materials
Used to produce non-fired bricks, ceramsite, cement and other products.
Energy Recovery
Serves as low-calorific-value fuel for power generation or central heating.
Chemical Applications
Metallurgical-grade and chemical-grade alumina can be extracted from aluminium-rich gangue, as well as rare metals including gallium, scandium, germanium, etc.
Advanced New Materials
Fine processing enables production of calcined kaolin, ceramic body raw materials, refractory materials, and advanced functional materials such as molecular sieves and ceramic membranes.
Ecological Remediation
Applied to backfill goafs and restore subsidence areas to stabilize terrain, control ground subsidence and accelerate ecological rehabilitation.
Coal gangue boasts enormous potential for high-value utilization in manufacturing new materials, emerging as a core driver for the green development of resource-based cities. With a global vision, full industrial chain capabilities and innovative grinding technologies, SBM helps customers transform the predicament of gangue waste into valuable raw material advantages, injecting new green momentum into the high-quality development of Shanxi Province and the whole country.
Supported by abundant local coal gangue resources and favorable policies, the customer plans to build a coal gangue powder production line with an annual output of 100,000 tons. The finished powder will act as the core raw material for refractory material manufacturing. After fully analyzing the customer’s production and site construction requirements, SBM carried out customized rational design tailored to on-site conditions. The production line features compact overall layout and simplified processes, aiming to deliver substantial economic benefits for clients with lower construction investment.
Material: Coal Gangue
Fineness: 80 Mesh
Application: Refractory Materials
Equipment: MTW European Trapezium Grinding Mill
Coal gangue generally has a Mohs hardness of 3 to 4, which is medium. However, it features complex compositions, often containing quartz, clay minerals, sulfides and other substances, and some coal gangue carries a certain amount of carbon. It puts specific demands on the wear resistance, output and energy consumption of grinding equipment.
SBM technical team conducted on-site investigations at the client’s plant and carried out comprehensive composition analysis of raw materials. A customized full-process technological solution was formulated, covering feeding pretreatment, precision grinding, intelligent classification and environmental dust collection.
The complete production line takes SBM MTW European Trapezium Grinding Mill as its core equipment. This mature model has been iteratively upgraded based on extensive feedback from industrial powder processing sites. It can effectively tackle challenges arising from the material’s properties, perfectly match working conditions for coal gangue grinding, and deliver high-efficiency, stable and cost-effective powder production.
Equipped with an advanced intelligent control system, SBM MTW European Trapezium Grinding Mill monitors grinding parameters in real time and dynamically adjusts them to guarantee continuous, stable, high-efficiency and low-energy operation of the whole production line. Its grinding rollers and rings are made of wear-resistant alloy materials, which greatly cut the cost of wearing parts. Compared with traditional materials, their service life is significantly extended, reducing replacement frequency and maintenance expenses effectively. Meanwhile, the machine is fitted with a high-efficiency cage powder separator that precisely controls the passing rate and particle size distribution of 80-mesh finished powder, eliminating coarse powder leakage and delivering finished products with uniform particle size and stable quality. The entire production line adopts a negative-pressure closed circulation system combined with pulse dust collectors to realize clean production.
Actual operation data proves the finished powder features regular particle shape and homogeneous composition, fully meeting the strict raw material particle consistency requirements for refractory sintering. After the project is put into operation, 100,000 tons of coal-based solid waste that would otherwise be stockpiled annually can be converted into high-quality raw materials for the refractory industrial chain. It indirectly conserves bauxite mining and reduces carbon footprint, serving as a micro-level implementation of the Zero-Waste City initiative and Dual Carbon Goals in resource-based provinces.
From solid waste surrounding cities to high-value reprocessing, SBM relies on professional grinding technology strengths and one-stop full-process services to help customers realize the value transformation of coal gangue from environmental burden to valuable resource. This project stands as a vivid practice marking another key engineering achievement of SBM in the field of high-value utilization of bulk solid waste, and further demonstrates SBM technical prowess and project execution capacity in integrated grinding system solutions.
Moving forward, SBM will keep optimizing equipment performance and service systems, support more coal-producing regions to accomplish industrial upgrading via converting solid waste into usable resources, and continuously contribute high-performance equipment to China’s green and low-carbon development.
Utilization in Building Materials
Used to produce non-fired bricks, ceramsite, cement and other products.
Energy Recovery
Serves as low-calorific-value fuel for power generation or central heating.
Chemical Applications
Metallurgical-grade and chemical-grade alumina can be extracted from aluminium-rich gangue, as well as rare metals including gallium, scandium, germanium, etc.
Advanced New Materials
Fine processing enables production of calcined kaolin, ceramic body raw materials, refractory materials, and advanced functional materials such as molecular sieves and ceramic membranes.
Ecological Remediation
Applied to backfill goafs and restore subsidence areas to stabilize terrain, control ground subsidence and accelerate ecological rehabilitation.
Coal gangue boasts enormous potential for high-value utilization in manufacturing new materials, emerging as a core driver for the green development of resource-based cities. With a global vision, full industrial chain capabilities and innovative grinding technologies, SBM helps customers transform the predicament of gangue waste into valuable raw material advantages, injecting new green momentum into the high-quality development of Shanxi Province and the whole country.
Supported by abundant local coal gangue resources and favorable policies, the customer plans to build a coal gangue powder production line with an annual output of 100,000 tons. The finished powder will act as the core raw material for refractory material manufacturing. After fully analyzing the customer’s production and site construction requirements, SBM carried out customized rational design tailored to on-site conditions. The production line features compact overall layout and simplified processes, aiming to deliver substantial economic benefits for clients with lower construction investment.
Material: Coal Gangue
Fineness: 80 Mesh
Application: Refractory Materials
Equipment: MTW European Trapezium Grinding Mill
Coal gangue generally has a Mohs hardness of 3 to 4, which is medium. However, it features complex compositions, often containing quartz, clay minerals, sulfides and other substances, and some coal gangue carries a certain amount of carbon. It puts specific demands on the wear resistance, output and energy consumption of grinding equipment.
SBM technical team conducted on-site investigations at the client’s plant and carried out comprehensive composition analysis of raw materials. A customized full-process technological solution was formulated, covering feeding pretreatment, precision grinding, intelligent classification and environmental dust collection.
The complete production line takes SBM MTW European Trapezium Grinding Mill as its core equipment. This mature model has been iteratively upgraded based on extensive feedback from industrial powder processing sites. It can effectively tackle challenges arising from the material’s properties, perfectly match working conditions for coal gangue grinding, and deliver high-efficiency, stable and cost-effective powder production.
Equipped with an advanced intelligent control system, SBM MTW European Trapezium Grinding Mill monitors grinding parameters in real time and dynamically adjusts them to guarantee continuous, stable, high-efficiency and low-energy operation of the whole production line. Its grinding rollers and rings are made of wear-resistant alloy materials, which greatly cut the cost of wearing parts. Compared with traditional materials, their service life is significantly extended, reducing replacement frequency and maintenance expenses effectively. Meanwhile, the machine is fitted with a high-efficiency cage powder separator that precisely controls the passing rate and particle size distribution of 80-mesh finished powder, eliminating coarse powder leakage and delivering finished products with uniform particle size and stable quality. The entire production line adopts a negative-pressure closed circulation system combined with pulse dust collectors to realize clean production.
Actual operation data proves the finished powder features regular particle shape and homogeneous composition, fully meeting the strict raw material particle consistency requirements for refractory sintering. After the project is put into operation, 100,000 tons of coal-based solid waste that would otherwise be stockpiled annually can be converted into high-quality raw materials for the refractory industrial chain. It indirectly conserves bauxite mining and reduces carbon footprint, serving as a micro-level implementation of the Zero-Waste City initiative and Dual Carbon Goals in resource-based provinces.
From solid waste surrounding cities to high-value reprocessing, SBM relies on professional grinding technology strengths and one-stop full-process services to help customers realize the value transformation of coal gangue from environmental burden to valuable resource. This project stands as a vivid practice marking another key engineering achievement of SBM in the field of high-value utilization of bulk solid waste, and further demonstrates SBM technical prowess and project execution capacity in integrated grinding system solutions.
Moving forward, SBM will keep optimizing equipment performance and service systems, support more coal-producing regions to accomplish industrial upgrading via converting solid waste into usable resources, and continuously contribute high-performance equipment to China’s green and low-carbon development.
